World number one Novak Djokovic was once again at his clinical best as he produced a complete performance against 53rd-ranked Spaniard Pablo Carreno Busta to advance to the quarterfinals of the ongoing ATP Cincinnati Masters 1000 tournament. The top-seed Djokovic was hardly troubled during his 90-minute encounter against Busta as he romped to a straight-sets win 6-3, 6-4 to advance to the last eight stages.Also Read - Novak Djokovic Agrees to Play in Australian Open 2022, Named in Main Draw List; No Serena Williams

The 32-year-old will next meet Frenchman Lucas Pouille in a rematch of their Australian Open semi-final in January, which was a straight-sets win for Djokovic. Pouille beat eighth seed Karen Khachanov of Russia 6-7(3), 6-4, 6-2 to make his third quarter-final – and first at the Masters 1000 level – of the season. Meanwhile, seven-time champion Roger Federer bowed out of the Cincinnati Masters after facing a shocking defeat to Russian qualifier Andrey Rublev in his Round of 16 match. The 21-year-old Rublev defeated Federer 6-3, 6-4 in just 62 minutes for his second top-5 victory in as many months. Also Read - Novak Djokovic Celebrates 350th Week Atop the ATP Rankings; Eyes Steffi Graf's Record

The 62-minute defeat was Federer’s fastest in more than 16 years, since his 54-minute defeat against Franco Squillari in the first round of 2003 Sydney, reported the ATP Tour website. Also Read - WATCH | Rafael Nadal Plays Tennis With 97-Year-Old Man

“He was super clean. Defence, offence, serving well. Didn’t give me anything. He was everywhere. It was tough for me, but an excellent match by him. I was impressed… I think I just have to play better overall to hang with him,” said Federer while praising Rublev.

Rublev is through to his first ATP Masters 1000 quarter-final and will meet Coupe Rogers finalist and countryman Daniil Medvedev for a place in the semi-finals.